2.2.0.25falsefalse0205 - Disclosure - Business Segmentstruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011
USD ($)
USD ($) / shares
$Jan-01-2011_Mar-31-2011http://www.sec.gov/CIK0000764622duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0pnw_BusinessSegmentsAbstractpnwfalsenadurationBusiness Segments.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse| 1falsefalsefalse00falsefalsefalsefalsefalse | Otherxbrli:stringItemTypestringBusiness Segments.falsefalse
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<!-- Begin Block Tagged Note 5 - us-gaap:SegmentReportingDisclosureTextBlock-->
<div style="font-family: 'Times New Roman',Times,serif; margin-left: 0in; ">
<div align="left" style="font-size: 10pt; margin-top: 10pt"><b>5. Business Segments</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">Pinnacle West’s reportable business segment is our regulated electricity segment, which
consists of traditional regulated retail and wholesale electricity businesses (primarily retail and
wholesale sales supplied to traditional cost-based rate regulation (“Native Load”) customers) and
related activities and includes electricity generation, transmission and distribution.
</div>
<div align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">Financial data for the three months ended March 31, 2011 and 2010 and at March 31, 2011 and
December 31, 2010 is provided as follows (dollars in millions):
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="72%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="9%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="9%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6">Three Months Ended</td>
<td> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000">March 31,</td>
<td> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000">2011</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000">2010</td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Operating revenues:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Regulated electricity segment
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">648</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">611</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">All other (a)
</div></td>
<td> </td>
<td> </td>
<td align="right">12</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">9</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:45px; text-indent:-15px">Total
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">660</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">620</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net income (loss)
attributable to common
shareholders:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Regulated electricity segment
</div></td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(15</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="left">$</td>
<td align="right">7</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">All other (b)
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(13</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:45px; text-indent:-15px">Total
</div></td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(15</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="left">$</td>
<td align="right">(6</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:30px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="72%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="9%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="9%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2">As of</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2">As of</td>
<td> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000">March 31, 2011</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000">December 31, 2010</td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Assets:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Regulated electricity segment
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">12,237</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">12,285</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">All other (b)
</div></td>
<td> </td>
<td> </td>
<td align="right">66</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">108</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Total
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">12,303</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">12,393</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:30px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; text-align: left">
<tr style="font-size: 6pt">
<td width="3%"> </td>
<td width="1%"> </td>
<td width="96%"> </td>
</tr>
<tr valign="top">
<td nowrap="nowrap" align="left">(a)</td>
<td> </td>
<td>All other activities relate to APSES and El Dorado.</td>
</tr>
<tr style="font-size: 3pt">
<td> </td>
</tr>
<tr valign="top">
<td nowrap="nowrap" align="left">(b)</td>
<td> </td>
<td>All other activities relate to SunCor, APSES and El Dorado.</td>
</tr>
</table>
</div>
<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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